CRASH 02

iTrader: (3)

I have seen a number of people that have had rocker arm bolts break off in their heads. I wonder if we showed enough interest to ARP that they could possibly start making ARP rocker arm bolts or studs. What do you guys think?

Nine Ball

iTrader: (38)

They only tend to break off when you remove them. This is because GM put loctite on the threads and the bolts are kind of small in diameter. If you install them too tightly, chances are you will strip the aluminum threads before you ever break one. Only 22 ft-lbs on those.

Tony

quickWS6

I just broke mine. Sometime when I was driving atleast one broke, and the rocker arm came unseated. I can't get them out, having to change heads. I've drilled and used bolt-out tools, but nothing has worked. Someone said I might have bent one when installing them, but there was nothing unusual about that cylinder when I installed them.

CRASH 02

iTrader: (3)

I just think it would be cheap insurance. I have heard of more than one person in the same situation as quickWS6.

-Joseph-

iTrader: (12)

I think the small ARP hex head bolts prob would work if they sell them separate from the head bolt kit. I havn't tried one yet though, it may be just a tad too long if anything.

CAT3

iTrader: (9)

sounds like insurance to me.

2xLS1

iTrader: (25)

I think you are going to break your 4.10 10 bolt rear end --> before you break a rocker arm bolt.

KRAZY K 2000 TA

iTrader: (5)

First time I ever heard about someone breaking a rocker arm bolt I thought just the rear ends are junk dont start talkin bad about the LS1 now man dont need any ARP bolts for the rocker arms just make sure the next time u put them back in u clean the old loctite of the bolts and clean out the bolt hole with a tap that is the right way

Nine Ball

iTrader: (38)

I've put over 80,000 abusive miles on 4 different LS1 engine setups and have never had a problem with any factory rocker bolts. In fact, the same rocker bolts were reused with each engine combo. Just make sure you torque them correctly, and clean off all the old loctite before reusing them.

22 ft-lbs isn't enough to bust a bolt like that.

robertbartsch

OH Man;
I think we should spread a nasty rumer that the rocker arm bolts are torque-to-yield bolts and must be replaced each time...

This would increase GM sales of bolts further....

...on second thought, they are already getting too much money from the so-called tork-to-yield head bolts...My GM dealer claims to reuse all head bolts for the last decade without any adverse problems....he laughs at those like me who buy new bolts...

quickWS6

I would buy them just for the peace of mind. The car was down on Monday, and I'm just now tying up the head install. Mostly this is due to the fact I can't remove my headers and I'm trying to work around them. The guy who installed my dual exhaust welded it all together, and I haven't had the time to get them cut off and clamped on yet.

robertbartsch

I've heard of welding the exhuast on before - really dumb!

robertbartsch

I'v been following this board for a couple of years now....

It is only recently that I have heard of folk who have been busting these bolts...weird hey!

robertbartsch

...does Comp Cams manufacture these bolts for GM? I know they have very poor quality control so it could be a bad batch of bolts that they made...hey, how many bad batches of 918 springs has this company made - 3 or 4?

someone should sue them so they stop selling defective parts...

white2001s10

iTrader: (4)

Has anyone installed studs in LS1 heads yet? Any links to this?

CRASH 02

iTrader: (3)

Holy old thread Batman!

Do you mean head studs or rocker arm studs? If you mean head studs yes they have been doing them for a few years now. Not sure about any links though.

white2001s10

iTrader: (4)

I mean machining the heads for oldschool style rocker studs.

SNW Vette

Hi,
I made these studs by cutting 8mm bolts to length and then rolling the 5/16 thread. I use jet nuts to capture the rockers.
Steve

Unaffliated Racing

iTrader: (15)

First off...Comp doesnt have poor quality control..secondly comp doesnt even make the springs themself..just like everybody else and third..yeah..go ahead and try to sue them..seeing how Comp is owned by a lawyer!

Scalpel

iTrader: (4)

Let it go man. Expecting a part to never fail is purely ignorant. Springs are designed by humans, the machines and process that makes the springs were designed by humans, and humans MAKE errors. Now, unless you're non-human, i.e. never make mistakes, let it go.

They fixed the "issue" with the old CC 918s. These are still the most popular and most used single drop-in replacement spring out there. You have to use any aftermarket spring with care, this means letting the car's oil temperature reach operating temperature before beating on them, etc. It's just common sense. These things aren't designed with million mile warranties in mind. They're a more aggressive spring and will wear faster with bigger cams, etc.

If all Comp Cams sold was defective parts they'd be out of business. BTW, do you run CC 918s? If so, did they break on you? Or, do they work just great like 99% of the others do?

PS, ARP can make you a set of rocker studs if you have the correct measurements, thread, pitch, etc.